<%@ page contentType="text/html;charset=UTF-8" %>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <title>index页面</title>
</head>
<body>
<h1>
    <%
        // http://localhost:8080/homework01/index.jsp?user=郑斯钧
        String user = request.getParameter("user");
        response.getWriter().println(user == null ? "无名氏" : user);
    %>
</h1>
<h2>Hello World!</h2>
<h2>你好哇。。</h2>
</body>
</html>
